Storage system and method of controlling of feeding power to storage system

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(11)

EP 1 918 809 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	07.07.2010 Bulletin 2010/27

(43)	Date of publication A2:
	07.05.2008 Bulletin 2008/19

(21)	Application number: 07251911.9

(22)	Date of filing: 09.05.2007

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International Patent Classification (IPC):

G06F 3/06^(2006.01)

G06F 1/32^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

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Priority:

30.10.2006 JP 2006294309

(71)	Applicant: Hitachi, Ltd.
	Chiyoda-ku Tokyo 100-8220 (JP)

(72)	Inventor:
	Shimada, Kentaro c/o Hitachi, Ltd. Chiyoda-ku Tokyo 100-8220 (JP)

(74)	Representative: Moore, Graeme Patrick et al
	Mewburn Ellis LLP 33 Gutter Lane London EC2V 8AS London EC2V 8AS (GB)

(54)	Storage system and method of controlling of feeding power to storage system

(57) A storage system (1) of the present invention saves power consumption of the storage system and enhances responsiveness by predicting a disk drive (3) that is to be accessed next on the basis of an access request from a host system (2), and promptly feeding power to the predicted disk drive. A prediction unit (7) predicts the disk drive which is to be accessed next by the host system, by comparing a recent access request from the host system against a past access pattern that is registered in an access pattern record table (8). A power control unit (6) feeds power from a power unit to the disk drive predicted by the prediction unit.

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